Effect of the "Sitting Out of Bed in an Arm-chair Position" in ICU on Functional Recovery Among Ventilated Patients

Chair positioning is one of a series of early mobilization techniques. At present, this technique, which involves moving a patient out of the resuscitation bed, can be performed passively or actively. It does not constitute a rehabilitative act as such, but it is considered in common paradigms as a technique to improve "the patient's breathing and strength". However, recommendations issued in 2013 by the Society of intensive care physiotherapy and the society "Société de réanimation de langue française (SRLF)", reveal that this chair position cannot be recommended with a high grade. The aim of the investigators is therefore to break down this early mobilization process in intensive care, to find out whether the armchair is an indispensable tool for improving functional and muscular processes. The research hypothesis is therefore as follows: "Early armchairing of the resuscitation patient, improves functional recovery compared to a conservative positioning strategy (sitting in bed)."